Dust cap for tire valves



Dec. 19, 1922.

1,439,300. DnEEsE.

Dus CAP4 50a URE VALVES. H Lsu qr. 16,1920.

ramas nee. 19,1922.

TENTCVOFFECE nntsnn'r spannen, onLARNnDQKANsAs.

` Appucauon filed october i6, 1920. serial no. 417,382.

T 0 all whom tv/may concern `Beit'known thatl, DELBnn'r B. Dnnnsn, citizenbf the United States, residing' at Larned, lin the county of Pawnee and State of Kansas, have invented certain new and useful Improvements iniDust Caps for ,Tire` vValves, of which the following is a specification. n

This invention relates to an improved dust cap'for tire valves and has as one of its `provide a cap employing a securing spring gseries of angular faces.' y'lChe vshell is open arranged to coact with the valve casing for binding the cap thereon.

And the invention has as a still further ob ject to provide a cap wherein the securing spring may be readily fitted in the cap or removed therefrom but wherein said spring will normally be held securely within lthey hereinafter.

f ln the drawings:

Figure 1 is a fragmentary sectional view showing my improved cap applied to a tire valve of conventional design, a portion ofy a wheel being illustrated, p

' Figure 2 is a transverse sectional view on the line 2 2 ofFigure 1, looking in the direction ofthe arrows, n

Figure 3 is a perspective view showing the securing spring for the cap ink detail, and

Figure 4 is line 4 4 of Figure 1, looking in the direction of the arrows. y

In carryino the invention into effect, l employ a cylindrical shell 10 preferably constructed of suitable -metal and provided throughout the major Vportion of its length,`

as particularly4 shown in Figure 2, with a at its lower end and closed at its upper end and pressed in fromthe wall of the shell .at the upper ends of the angular faces thereof is an annular shoulder or .rib 11. Removably tting inthe shell is a securing spring therefor. As shown in detail in Figure 3, said spring comprises a Hat spring tongue 12 which throughout the major portion of its length is bowed longitudinally.

a transverse section on the" The upper end lportion'of the tongue is straight and integrally formed thereon or otherwise securedftosaid` tongue isa split resilient anchoring lring 13.y This ring is positionedvvwithin the vshell above the shoul- -der lltliereof and the normalfexternal di-l ameter of the ringis slightly greater than `the internal diameter of theupper end por-l tion of the'. shell so that said ring will fricltionally coa'ct i with the shell *lfor'securing theuspring'therein, the curved vlower end .downward movement sothat possibility of' accidental displacement of the spring will' be effectually overcome while, at the same time, the springwill also beheld against However, by grasping the free end of the tongue and exerting sufficient pulling force portion `of the tongue bowingv inwardly 7,

`longitudinal" shifting vwithiny the shell. .i

thereon, the .ring 13 may be caused to ride i overthe shoulder 11 so that the spring may 'be displaced. f Consequently, should one spring become broken or its efficiency otherwise impaired, a newn spring may be readily insert a new substituted therefor. To springl in the shell, it is4 simply necessary to push the spring inwardly within the shell'until the split ring of said spring is caused 4to ride over `the shoulder o f the shell when the ring will then, as previously explained, coact with the shell for holding the spring therein. In this connection, it is to be noted that the straight upper end portion of the tongue is formed to lit, as

shown in detail in Figure 4, between a pair of the angular faces of the shell so that as will be seen, the straight lupper end portion of the tonguefwill coact with said faces for holding the split ring 13 against rotative movement `within `the shell. Consequently, kthe tongue 12 will be prevented from shifting about the axis of the shell.

inthe drawing, I have shown my `1 mproved cap inconnection with the tire valve of a conventional tire. 'The valve casing vis indicated at v14 and as usual, this 'y casing` is formed with a pair of oppositely disposed flat faces 15.

1 Closing the casing at its upper end is the usual4A cap 16. The

casing is shown as fitted through a wheel flat'face of the 055mg* threaded upon the easing to seat against 'the inner ieee of seid telly iS the yeri-eterni;ry v nut 18. As 'will now be eeen, the shell may y be slidahly itted over the projecting enter end portion of the easing and the tongue l2 brought to bear against one of the liet feces l5 thereof when the tongue wil-l/eoaet with the easing for Securely holding' the siell thereon. :Since the spring is, as previously explained, looked ageinetvrotntion within the shell, the tongue willconet `with the confronting 'latface of the ycasing to, in turn, lock the shell against rotation upon they ezieingj while rotative ,creeping of the spring will he prevented such as might pos-' the In ieiiimriliig` the shell it may, of Course, simply-be withdrawn frein over rthe Casing. fl zreeordingly pro-- sibl vcanse the tonoue to ride oli" of `Vide n dust-cap of highly eeetive design -and a cap' which may, as lwill new be clear,

I he readily employed in Connection with suhstentiallyl any eonxentional design of tire valve. f t e Having. thusdeeerihed the invention, what is eleiined 'es new is: y

dust cap for tire Yalvesfincluding e Shell having an internal shoulder near its .outer end yand provided with flat angular reces, and a securing spring` Ylor the shell having e splitresilient ring expended within the shell y above seid ehonlder 'for engaging the inner *circumferential wall oi" the shell end holding,` the spring within the seine, and e tongneextending from Suid ring and provided withv af Straight portion et the ring lying between two "Het faces of the shell whereby said feces `will eoeet with the edges of the straight portion of the Spring to hold the spring againstrelative .rotation withinfthe Shell. f

ln testinion f whereof l ellix lmy signature.

DELE infr Le, nennen. [L Sg 

